Design and optimization methods towards a 10 kW high beam quality fiber laser based on the counter tandem pumping scheme

Autor:	Ruixian Li, Hanshuo Wu, Hu Xiao, Zilun Chen, Jinyong Leng, Liangjin Huang, Zhiyong Pan, Pu Zhou
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	fiber laser high beam quality high power stimulated Raman scattering tandem pumping Applied optics. Photonics TA1501-1820
Zdroj:	High Power Laser Science and Engineering, Vol 12 (2024)
Druh dokumentu:	article
ISSN:	2095-4719 2052-3289
DOI:	10.1017/hpl.2024.21
Popis:	In this study, we investigated the influence of fiber parameters on stimulated Raman scattering (SRS) and identified a unique pattern of SRS evolution in the counter tandem pumping configuration. Our findings revealed that the SRS threshold in counter-pumping is predominantly determined by the length of the output delivery fiber rather than the gain fiber. By employing the counter tandem pumping scheme and optimizing the fiber parameters, a 10 kW fiber laser was achieved with beam quality M2 of 1.92. No mode instability or severe SRS limitation was observed. To our knowledge, this study achieved the highest beam quality in over 10 kW fiber lasers based on conventional double-clad Yb-doped fiber.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/14ca7c10650449aca8841edeae99d726 Zobrazit plný text záznamu View record in DOAJ